PUSHEN Pushen PS 2930/2 black and white Hiding Power Chart

Q5.1.2.1 Colorless transparent polyester film (Method A) Untreated, with a thickness of 30 m to 50 m and a size of not less than 100 m x 150 mm Note: By mutual agreement, thicker polyphenol films can be used. 5.1.2.2 black and white card paper (method B) All cards are the same size, at least 100 mmX200 mm printing and varnishing adjacent black and white areas Paints should be easily wetting but impermeable to solvent or water The dimensions of the black and white areas shall be not less than 80 mmX80 mm, unless otherwise agreed, using a reflection meter or For spectrophotometer measurement, the tristimulus values Y of the white area of the card paper should be 802, and the tristimulus values Y of the black area should not be greater than 5. In order to avoid errors caused by different batches of card paper, the card paper used in the test should be of the same batch 5.1.3 Film Applicator Composed of a range of Lacquer Film Applicators, these coatings applicators give a range of wet film thicknesses typically 100 m200 Paint film of uniform thickness. The light film scraped by the coating applicator should be at least 70 mm wide to obtain an area of uniform thickness and should not be less than 60 mmX60 mm Note that in order to obtain a uniform paint film, it is recommended to use an automatic cloth device

QHow many mm is the size of Pushen covering power measuring cardboard?

QIs there any film laminating on the surface of this covering power paper?

QFind a medium black and white paper for GB/T9757